summarize the key points of the paper:Cornelius, Wayne A. 1992. "From Sojourners to Settlers: The Changing Profile of Mexican Migration to the United States," in J.A. Bustamante, C.W. Reynolds, and R. Hinojosa-Ojeda, (eds.) U.S.-Mexico Relations: Labor Ma

In "From Sojourners to Settlers: The Changing Profile of Mexican Migration to the United States," Wayne A. Cornelius examines the evolving nature of Mexican migration patterns and their socioeconomic implications. Here are the key points from the paper:

**Historical Context**: The paper outlines the historical patterns of Mexican migration, emphasizing that early migrants often viewed their relocation as temporary, aiming to return to Mexico after earning money.

**Shift in Migration Patterns**: Cornelius argues that there has been a significant shift from temporary migration (sojourners) to more permanent settlement (settlers). This change reflects broader economic, political, and social changes in both Mexico and the U.S.

**Factors Influencing Migration**: The author identifies several factors influencing this shift, including economic instability in Mexico, increased demand for labor in the U.S., and changes in immigration policies that have affected the nature of migrant experiences.

**Social Networks**: The development of strong social networks among Mexican migrants has facilitated the transition from temporary to permanent residence. These networks provide support and resources for new immigrants.

**Impacts on Labor Markets**: The paper discusses the implications of this migration shift for labor markets in the U.S., highlighting how settled migrants contribute to the economy and the complexities this creates in policy and labor relations.

**Policy Implications**: Cornelius emphasizes the need for comprehensive immigration reform that recognizes the changing dynamics of migration and addresses the realities of settled immigrants, including their contributions and challenges.

**Future Research Directions**: The author calls for further research into the social, economic, and political factors that continue to shape Mexican migration and settlement patterns, to better understand the long-term consequences for both countries.

Overall, Cornelius's work sheds light on the transformation of Mexican migration from a transitory experience to a more permanent phenomenon, reiterating the interconnectedness of U.S.-Mexico relations.